CVE-2026-47833: Cloud Foundry Foundation Bpm-Release

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

setupBpmLogs follows symlink for bpm.log open and chown — container-to-host privilege escalation via /etc/shadow. A compromised process inside a bpm container can cause root to chown an arbitrary host file to vcap and append bpm JSON log lines to it. The chown alone lets the attacker take ownership of /etc/shadow and read every password hash on the host via the read-only /etc bind mount. This is a container-to-host confidentiality break affecting every bpm-managed job. Affected versions: bpm-release, all versions prior to v1.4.30.

Affected products

Published 2026-06-18. Last modified 2026-06-22.